Re: [Pound Mailing List] FreeBSD and failed requests

On Thu, 2006-05-04 at 11:23 -0700, Scott Larson wrote:
>       A rather strange problem I'm having.  Searching through the  
> archives I see this exact question was asked back in February but got  
> no responses.  The issue is that the throughput by a server running  
> Pound falls flat, and generates failed requests on the magnitude of  
> 70-80% by Apache bench, even when performing a request as small as 50  
> with 1 concurrent user.  If I bypass Pound and direct the requests  
> straight to the back end web server, failed requests drop to zero.   
> Necessary background info would be that the OS is FreeBSD 6.1-RC2,  
> that I get this problem with pound 1.9 out of ports, and that it  
> persists even with 2.0.4 built against a separate OpenSSL with  
> threading enabled.  Since I'd prefer to use 2.x, here's the current  
> config:
> 
> User "www"
> Group "www"
> LogLevel 2
> 
> ListenHTTP
>    Address 10.10.10.32
>    Port    8080
> End
> 
>     Service
>        BackEnd
>            Address 10.10.10.35
>            Port    80
>        End
>        BackEnd
>            Address 10.10.10.36
>            Port    80
>        End
>     End
> 
>       Of note is that despite LogLevel 2, no complaints are showing  
> up in /var/log/messages.  It logs the startup notification and  
> nothing else so I don't have anything useful to include from that at  
> the moment.  Here's some ab info to illustrate what's going on:
> 
> With Pound 2.0.4:
> 
> [ stl@grimes : ~ ] $ ab -k -n 50 -c 1 http://192.168.0.205/
> ...
> Concurrency Level:      1
> Time taken for tests:   0.188027 seconds
> Complete requests:      50
> Failed requests:        40
> Requests per second:    265.92 [#/sec] (mean)
> ...
> 
> Without Pound 2.0.4:
> 
> [ stl@grimes : ~ ] $ ab -k -n 50 -c 1 http://192.168.0.205/
> ...
> Concurrency Level:      1
> Time taken for tests:   0.45350 seconds
> Complete requests:      50
> Failed requests:        0
> Requests per second:    1102.54 [#/sec] (mean)
> ...

Something must show in the log files - at the very least the 50
requests, together with their status. You may want to try LogLevel 4 for
a more verbose display.

In any case I'd be curious to see what a "failed" request means: was
there no response, or a wrong response, or perhaps a 5xx response?

More info required...
-- 
Robert Segall
Apsis GmbH
Postfach, Uetikon am See, CH-8707
Tel: +41-44-920 4904


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